MRI imaging methods using a single excitation
AssigneeDuke University
InventorAllen W. Song
Life of this patent
Estimating the term…
Abstract
Signal recovery in functional magnetic resonance imaging (fMRI) is provided by generating a single excitation pulse and exciting a target region of a subject with the generated excitation pulse. A first image is obtained using a first partial k-space frame of the target region. A compensation pulse is generated and the target region excited with the compensation pulse. A second, compensated, image is obtained subsequent to the excitation by the compensation pulse using a second partial k-space frame of the target region. The first and second images are combined to form a combined image of the target region. The first and second obtaining steps are carried out sequentially during a single quadratic excitation pulse.
Claims39
A method of recovering a signal of a functional magnetic resonance imaging system, comprising:
- exciting a target region of a subject with a single excitation pulse;
- then
- obtaining a first image using a first partial k-space frame of the target region;
- then
- subjecting the target region to a compensation pulse;
- then
- obtaining a second, compensated, image using a second partial k-space frame of the target region;
- and
- combining the first and second images to form a combined image of the target region.
A system for recovering a signal of a functional magnetic resonance imaging system, comprising:
- means for exciting a target region of a subject with a single excitation pulse;
- means for obtaining a first image using a first partial k-space frame of the target region;
- means for subjecting the target region to a compensation pulse responsive to the means for obtaining a first image;
- means for obtaining a second, compensated, image using a second partial k-space frame of the target region responsive to the means for subjecting the target region to a compensation pulse;
- and
- means for combining the first and second images to form a combined image of the target region.
A computer program product for recovering a signal of a functional magnetic resonance imaging system, comprising:
- a computer readable storage medium having computer readable program code embodied therein, the computer readable program code comprising:
- computer readable program code configured to excite a target region of a subject with a single excitation pulse;
- computer readable program code configured to obtain a first image using a first partial k-space frame of the target region;
- computer readable program code configured to subject the target region to a compensation pulse responsive to the computer readable program code configured to obtain a first image;
- computer readable program code configured to obtain a second, compensated, image using a second partial k-space frame of the target region responsive to the computer readable program code configured to subject the target region to a compensation pulse;
- and
- computer readable program code configured to combine the first and second images to form a combined image of the target region.
Dependencies are inferred from the claim text.